1. The problem statement, all variables and given/known data Alright, so the equation of a parabola is [itex]y = 1/4p*x^2[/itex], P being either an x or y value, and the other x or y being zero. Let's say that [itex]x^2 = 16y[/itex]. If you divide both sides by 16, you get [itex]y = x^2/16[/itex], which can be simplified to [itex]y = 1/16*x^2[/itex]. This is in the format of a parabola, so finding p is simple. 16 is the product of 4p, so [itex]4p=16[/itex]. Divide both sides by 4 and p=4. So the focus is at (0,4). This seems simple to me, until you get equations like this: [itex]3x^2 + 4y = 0[/itex]. I can't seem to get this in the form of a parabola. I got [itex]-3/4 *x^2=y[/itex]. This wouldn't help me find the focus, due to the fact that it's not in that form. How exactly would you go about finding the focus in cases like this? Thanks for any help!